NCERT Class 11 Statistics Measures of Central Tendency

Read and download NCERT Class 11 Statistics Measures of Central Tendency chapter in NCERT book for Class 11 Economics. You can download latest NCERT eBooks for 2022 chapter wise in PDF format free from Studiestoday.com. This Economics textbook for Class 11 is designed by NCERT and is very useful for students. Please also refer to the NCERT solutions for Class 11 Economics to understand the answers of the exercise questions given at the end of this chapter

Measures Of Central Tendency Class 11 Economics NCERT

Class 11 Economics students should refer to the following NCERT Book chapter Measures Of Central Tendency in standard 11. This NCERT Book for Grade 11 Economics will be very useful for exams and help you to score good marks

Measures Of Central Tendency NCERT Class 11

EXERCISES

1. Which average would be suitable in the following cases?

(i) Average size of readymade garments.

(ii) Average intelligence of students in a class.

(iii) Average production in a factory per shift.

(iv) Average wages in an industrial concern.

(v) When the sum of absolute deviations from average is least.

(vi) When quantities of the variable are in ratios.

(vii)In case of open-ended frequency distribution.

2. Indicate the most appropriate alternative from the multiple choices provided against each question.

(i) The most suitable average for qualitative measurement is

(a) arithmetic mean

(b) median

(c) mode

(d) geometric mean

(e) none of the above

(ii) Which average is affected most by the presence of extreme items?

(a) median

(b) mode

(c) arithmetic mean

(d) geometric mean

(e) harmonic mean

(iii) The algebraic sum of deviation of a set of n values from A.M. is

(a) n

(b) 0

(c) 1

(d) none of the above

[Ans. (i) b (ii) c (iii) b]

3. Comment whether the following statements are true or false.

(i) The sum of deviation of items from median is zero.

(ii) An average alone is not enough to compare series.

(iii) Arithmetic mean is a positional value.

(iv) Upper quartile is the lowest value of top 25% of items.

(v) Median is unduly affected by extreme observations.

4. If the arithmetic mean of the data given below is 28, find (a) the missing frequency, and (b) the median of the series:

Profit per retail shop (in Rs) 0-10 10-20 20-30 30-40 40-50 50-60

Number of retail shops 12 18 27 - 17 6

(Ans. The value of missing frequency is 20 and value of the median is Rs 27.41)

5. The following table gives the daily income of ten workers in a factory. Find the arithmetic mean.

Workers A B C D E F G H I J

Daily Income (in Rs) 120 150 180 200 250 300 220 350 370 260

(Ans. Rs 240)


Please refer to attached file for NCERT Class 11 Statistics Measures of Central Tendency

Appendix A : Glossary Of Statistical Terms
NCERT Class 11 Statistics Glossary Of Statistical Terms
Appendix B : Table Of Two-Digit Random Numbers
NCERT Class 11 Statistics Table Of Two Digit Random Numbers
Indian Economic Development Chapter 1 Indian Economy on the Eve of Independence
NCERT Class 11 Economics Indian Economy On The Eve Of Independence
Indian Economic Development Chapter 10 Comparative Development Experiences Of India and Its Neighbours
NCERT Class 11 Economics Comparative Development Experiences Of India And Its Neighbours
Indian Economic Development Chapter 2 Indian Economy 1950-1990
NCERT Class 11 Economics Indian Economy
Indian Economic Development Chapter 3 Liberalisation, Privatisation and Globalisation: An Appraisal
NCERT Class 11 Economics LPG An Appraisal
Indian Economic Development Chapter 4 Poverty
NCERT Class 11 Economics Poverty
Indian Economic Development Chapter 5 Human Capital Formation In India
NCERT Class 11 Economics Human Capital Formation In India
Indian Economic Development Chapter 6 Rural Development
NCERT Class 11 Economics Rural Development
Indian Economic Development Chapter 7 Employment Growth Informalisation and Other Issues
NCERT Class 11 Economics Employment Growth And Other Issues
Indian Economic Development Chapter 8 Infrastructure
NCERT Class 11 Economics Infrastructure
Indian Economic Development Chapter 9 Environment and Sustainable Development
NCERT Class 11 Economics Environment And Sustainable Development
Statistics for Economics Chapter 1 Introduction
NCERT Class 11 Statistics Introduction
Statistics for Economics Chapter 2 Collection of Data
NCERT Class 11 Statistics Collection of Data
Statistics for Economics Chapter 3 Organisation of Data
NCERT Class 11 Statistics Organisation of Data
Statistics for Economics Chapter 4 Presentation of Data
NCERT Class 11 Statistics Presentation of Data
Statistics for Economics Chapter 5 Measures of Central Tendency
NCERT Class 11 Statistics Measures of Central Tendency
Statistics for Economics Chapter 6 Measures of Dispersion
NCERT Class 11 Statistics Measures of Dispersion
Statistics for Economics Chapter 7 Correlation
NCERT Class 11 Statistics Correlation
Statistics for Economics Chapter 8 Index Numbers
NCERT Class 11 Statistics Index Numbers
Statistics for Economics Chapter 9 Use of Statistical Tools
NCERT Class 11 Statistics Use of Statistical Tools